The Wild Fact About Octopuses That Sounds Fake But Is 100% True

Three of these things exist inside one animal, and it changes everything.

An octopus has three hearts, and that's only the start of how bizarre this creature really is.

Two hearts pump blood to the gills while a third drives it around the rest of the body.

Their blood is blue because it uses copper instead of iron to carry oxygen through cold seas.

Add a brain in every arm and you've got an animal that feels almost too strange to be real.